a yellow crystalline pigment found naturally in the rind and bark of many plants. It is used in medicine to treat fragile capillaries. Formula: C15H10O7; melting pt: 316–7°C
Also called: flavin
Derived forms
quercetic (kwɜːˈsɛtɪk, -ˈsiː-)
adjective
Word origin
C19: from Latin quercētum an oak forest (from quercus an oak) + -in
quercetin in American English
(ˈkwɜrsətɪn)
noun
the yellow, crystalline dyestuff, C15H10O7, extracted from the inner bark of the black oak and also produced synthetically
Derived forms
quercetic (kwərˈsɛtɪk; kwərˈsitɪk)
adjective
Word origin
< L quercetum, oak forest < quercus, oak (< IE base *perkwus, oak > fir2) + -in1
Examples of 'quercetin' in a sentence
quercetin
The quercetin contained in apples acts as an antioxidant that cuts bad cholesterol.
The Sun (2008)
Quercetin sits justunder the skin so never peel your apples before eating.
Times, Sunday Times (2010)
To begin with, consider stocking up with quercetin.
Times, Sunday Times (2010)
Quercetin works by blocking mast cells, which are key players in our immune system.
The Sun (2008)
Mangoes give us a host of supernutrient pigments including betacarotene and beta-cryptoxanthin along withthe antioxidant quercetin.
Times, Sunday Times (2007)
Don't peel your apples because the valuable quercetin sits just under the skin.